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Complications of chronic total occlusion percutaneous coronary intervention

Y Patel, JP Depta & TJ DeMartini

Chronic total occlusions (CTOs) are typically characterized by thrombolysis in myocardial infarction (TIMI) grade 0 (i.e., complete) or TIMI grade 1 flow in a coronary artery for a minimum of 3 months.